South and Central America Allergy Immunotherapies Market Forecast to 2027 - COVID-19 Impact and Regional Analysis by Treatment (Subcutaneous Immunotherapy (SCIT) and Sublingual Immunotherapy (SLIT)); Allergy type (Allergic Rhinitis, Asthma, Food Allergy, Venom Allergy, and Others); Distribution Channel (Hospital Pharmacy, Retail Pharmacy, and Online Pharmacy) and Country